<ARTICLE> 5
<MULTIPLIER> 1,000,000
       
                                                  
<PERIOD-TYPE>                   3-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1994             DEC-31-1994
<PERIOD-END>                               MAR-31-1994             SEP-30-1994
<CASH>                                             298                     298
<SECURITIES>                                         0                       0
<RECEIVABLES>                                    1,755                   1,755
<ALLOWANCES>                                         0                       0
<INVENTORY>                                        242                     242
<CURRENT-ASSETS>                                 2,884                   2,884
<PP&E>                                          30,198                  30,198
<DEPRECIATION>                                  16,703                  16,703
<TOTAL-ASSETS>                                  21,388                  21,388
<CURRENT-LIABILITIES>                            5,151                   5,151
<BONDS>                                              0                       0
<COMMON>                                         7,568                   7,568
<PREFERRED-MANDATORY>                               51                      51
<PREFERRED>                                          0                       0
<OTHER-SE>                                       (844)                   (844)
<TOTAL-LIABILITY-AND-EQUITY>                    21,388                  21,388
<SALES>                                          2,765                   8,114
<TOTAL-REVENUES>                                 2,765                   8,114
<CGS>                                                0                       0
<TOTAL-COSTS>                                        0                       0
<OTHER-EXPENSES>                                 2,118                   6,190
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                 104                     323
<INCOME-PRETAX>                                    514                   1,645
<INCOME-TAX>                                       196                     628
<INCOME-CONTINUING>                                318                   1,017
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                       318                   1,017
<EPS-PRIMARY>                                      .70                    2.25
<EPS-DILUTED>                                      .70                    2.25